"In the lab version, as the animal's teeth ripped the sage leaves, scientists watched the sage plant send a chemical signal into the air, and watched as a nearby tobacco plant picked up the signal and then emitted an odor that was noxious to the animal — strong enough to repel the antelope — protecting itself, and, arguably, helping the sage."

This is very interesting! Perhaps with the right combination of plants we could build a chain reaction garden defense system!

We don't have time for this. We've gotta save the moon! Or check this out: